.sidebar {
    width: 250px;
    transition: transform 0.3s ease-in-out;
    position: fixed;
    left: 0;
    top: 0;
    height: 100%;
    background: white;
    padding: 1rem;
    box-shadow: 2px 0 5px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.sidebar.collapsed {
    transform: translateX(-100%);
}

.sidebar-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1001;
    cursor: pointer;
    background: rgb(255, 255, 255);
    padding: 0.5rem;
    border-radius: 50%;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.main-content {
    margin-left: 250px;
    transition: margin-left 0.3s ease-in-out;
}

.main-content.expanded {
    margin-left: 0;
}

.timeline {
    position: relative;
    padding: 0;
    list-style: none;
}

.timeline:before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #e2e8f0;
    left: 20px;
    margin: 0;
}

.timeline-item {
    margin: 20px 0;
    padding-left: 40px;
    position: relative;
}

.timeline-item:before {
    content: '';
    display: table;
    clear: both;
}

.timeline-icon {
    width: 12px;
    height: 12px;
    background: #e2e8f0;
    border-radius: 50%;
    position: absolute;
    left: 14px;
    top: 5px;
}

.timeline-content {
    padding: 10px 20px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}